CN210256922U

CN210256922U - Silica gel pad forming die

Info

Publication number: CN210256922U
Application number: CN201920592018.3U
Authority: CN
Inventors: 李晓琼; 毕哲哲; 蔺永祥
Original assignee: Biel Crystal Manufactory Huizhou Ltd
Current assignee: Biel Crystal Manufactory Huizhou Ltd
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2020-04-07
Anticipated expiration: 2029-04-26

Abstract

The utility model discloses a silica gel pad forming die, including last mould assembly and lower mould assembly, it includes mould and last mould mold insert to go up the mould assembly for the supporting legs of preparation silica gel pad, lower mould assembly includes lower mould and lower mould mold insert, the lower mould mold insert is pressed and is covered and is being located on the cell-phone apron of logical inslot of lower mould, cell-phone apron internal surface is as silica gel pad surface forming's template, the inlet that supplies the silica gel liquid to get into is seted up to the lower surface side of going up the mould, the upper surface of lower mould seted up with the inlet is linked together and supplies the feed liquor groove that the silica gel liquid got into the die. The utility model discloses can improve the size accuracy and the surface smoothness of silica gel pad, reinforcing adsorptivity and exhaust performance guarantee that cell-phone apron and viscous film laminating in-process do not produce the bubble, fix a position the accuracy.

Description

Silica gel pad forming die

Technical Field

The utility model belongs to the technical field of the mould, concretely relates to silica gel pad forming die.

Background

The mobile phone cover plate is used as an important part of the mobile phone, on one hand, a circuit carrier is provided for realizing electrical connection of electronic components, and on the other hand, the electronic components are protected from being damaged by the outside. The mobile phone cover plate and the mobile phone cover plate are combined together to form a protective shell of the electronic component. The combination of the mobile phone cover plate and the mobile phone cover plate firstly needs to bond adhesive substances on four sides of the inner surface of the mobile phone cover plate. The method generally adopted is that an adhesive film with adhesive substances adhered to four sides is adsorbed on a silica gel pad, the inner surface of a mobile phone cover plate is contacted with the film, a certain pressure is applied, the adhesive film is adhered to the inner surface of the mobile phone cover plate, and the corresponding adhesive substances are left on the four sides of the inner surface of the mobile phone cover plate after the adhesive film is slightly torn off. The quality of viscidity film is light, produces easily foldingly, and this just needs the surface of silica gel pad to have enough high adsorption efficiency just can guarantee that viscidity film levels stably, guarantees completion and the production efficiency of laminating.

Injection molding is used as a processing method for producing the silica gel pad, and silica gel liquid is injected into a designed forming die and is taken out of the forming die after being cooled, so that the required silica gel pad is obtained. The forming die is used as an important bearing tool for preparing the silica gel pad, the silica gel pad is endowed with a complete structural design, and the internal precision determines the adsorption capacity of the surface of the silica gel pad. Traditional forming die material is the mould steel, to the forming die that interior surface required precision is high, the cycle length of processing of mould steel, cost of labor are high to injection moulding is applicable to mass production, and small batch production is with high costs.

At present, organic glass can be used as a raw material of a forming die, so that the production cost of the die is reduced, and whether defects such as bubbles are generated in the forming process is conveniently observed. Meanwhile, the production cost can be reduced by adopting a perfusion mode to carry out small-batch production. However, the precision of the silica gel pad formed by pouring is poor, the surface smoothness is low, the adsorption capacity and the exhaust capacity of the silica gel pad are poor, and bubbles are easily generated in the process of attaching the viscous film and the mobile phone cover plate, so that the attaching deviation is caused. Therefore, a new forming mold is required to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a silica gel pad forming die, this silica gel pad forming die can improve silica gel pad's dimensional accuracy and smooth degree in surface, reinforcing adsorptivity and exhaust performance guarantee that cell-phone apron and viscous film laminating in-process do not produce the bubble, and the location is accurate.

In order to solve the technical problem, the utility model adopts the following technical scheme: the silica gel pad forming die comprises an upper die assembly and a lower die assembly, wherein a gap between the upper die assembly and the lower die assembly forms a cavity for forming the silica gel pad; the upper die assembly comprises an upper die and an upper die insert and is used for manufacturing a supporting leg of the silica gel pad; the lower die assembly comprises a lower die and a lower die insert, a through groove is formed in the surface of the lower die, a first step for carrying a mobile phone cover plate and a second step for carrying the lower die insert are arranged on the outer edge of the lower surface of the through groove, and the lower die insert is pressed on the mobile phone cover plate; the lower surface side of the upper die is provided with a liquid inlet for silica gel liquid to enter, and the upper surface of the lower die is provided with a liquid inlet groove which is communicated with the liquid inlet and is used for silica gel liquid to enter the cavity.

According to the design concept of the utility model, the second step with the difference in height of first step is the height of cell-phone apron.

According to the utility model discloses a design concept, the storage tank has been seted up on the surface of last mould, it penetrates to go up the mould mold insert the storage tank with it makes up as an organic whole to go up the mould.

According to the utility model discloses a design concept, go up the mould insert with go up mould structure as an organic whole.

According to the design concept of the utility model, go up the lower surface side department of mould mold insert and set up two rectangular grooves of mutual symmetry, rectangular groove with the lower surface of last mould constitutes the die cavity of the supporting legs production of silica gel pad.

According to the utility model discloses a design concept, the incision has been seted up to the side of the lower surface of last mould.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the silica gel pad forming die of the utility model utilizes the space between the upper die assembly and the lower die assembly to form a cavity for forming the silica gel pad, and the forming size of the silica gel pad is accurately controlled; in addition, the mobile phone cover plate is carried on the first step of the lower die, so that the surface of the formed silica gel pad is consistent with the inner surface of the mobile phone cover plate, the smoothness is high, the adsorbability and the exhaust performance are high, no bubbles are generated in the process of attaching the mobile phone cover plate and the adhesive film by using the silica gel pad, the adhesive film is correctly attached to the corresponding position of the mobile phone cover plate, and the positioning is accurate.

(2) The lower die insert is carried on the second step of the lower die and pressed on the mobile phone cover plate, so that the mobile phone cover plate is prevented from sliding in the forming process of the silica gel pad, and the integrity of the structure and the smoothness of the surface of the silica gel pad are guaranteed. Meanwhile, the lower die insert can be used for pressing and covering mobile phone cover plates with different shapes, and the application range is wide.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is an exploded view of the present invention;

fig. 3 is a schematic structural view of an upper die assembly of the present invention;

fig. 4 is a schematic structural view of the lower mold of the present invention.

Description of the symbols of the drawings:

the mobile phone comprises an upper die assembly 1, a lower die assembly 2, an upper die 3, an upper die insert 4, a containing groove 5, a strip groove 6, a liquid inlet 7, a notch 8, a lower die 9, a lower die insert 10, a mobile phone cover plate 11, a through groove 12, a first step 13, a second step 14 and a liquid inlet groove 15.

Detailed Description

Silica gel pad forming die, it is mainly that the surface smoothness to the silica gel pad of traditional mould production is low, adsorptivity and gas permeability are poor, the sticky film is fixed a position the inaccuracy with cell-phone apron laminating in-process, has a solution that technical defect such as bubble provided. The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

It should be noted that, the mobile phone cover plate of the present invention is a 2D cover plate, a 2.5D cover plate and a 3D cover plate.

As shown in fig. 1, the silica gel pad forming mold comprises an upper mold component 1 and a lower mold component 2, wherein the upper mold component 1 covers the upper side of the lower mold component 2, and a gap between the upper mold component 1 and the lower mold component 2 forms a mold cavity for forming the silica gel pad. The distribution of the silica gel liquid is controlled by the shape and the size of the cavity, and the silica gel liquid is cooled and formed into the designed shape and size with high precision.

As shown in fig. 2 and 3, the upper die assembly 1 includes an upper die 3 and an upper die insert 4, and the upper die insert 4 is located in the upper die 3 and used for manufacturing a supporting leg of the silica gel pad. The upper die 3 and the upper die insert 4 can be designed into an integral structure, the space for manufacturing the silica gel pad supporting leg is arranged on the lower surface of the upper die 3, and the space for manufacturing the silica gel pad is arranged on the lower surface of the upper die insert 4. For convenient processing, the upper die 3 and the upper die insert 4 are of different structures.

Specifically, a containing groove 5 is formed in the surface of the upper die 3, the containing groove 5 penetrates through the upper surface and the lower surface of the upper die 3, the shape and the size of the containing groove are matched with those of the upper die insert 4, and the upper die insert 4 penetrates into the containing groove 5 and is combined with the upper die 3 into a whole. Two strip grooves 6 which are symmetrical to each other are formed in the side edge of the lower surface of the upper die insert 4, and the strip grooves 6 and the lower surface of the upper die 3 form a cavity for producing supporting legs of the silica gel pad.

In addition, the side edge of the lower surface of the upper die 3 is provided with a liquid inlet 7 for silica gel liquid to enter the die, and the liquid inlet 7 controls the speed of the silica gel liquid to enter. In addition, can observe the distribution condition of silica gel liquid through this mould, look over whether there is the bubble to produce, the accessible the bubble that produces is eliminated to inlet 7, guarantees the structural integrity and the surface smoothness of silica gel pad. Simultaneously, in order to take out from the mould after the silica gel pad cooling shaping in convenience, the lower surface of going up the mould still is equipped with incision 8.

As shown in fig. 2 and 4, the lower mold assembly 2 includes a lower mold 9 and a lower mold insert 10, the lower mold insert 10 is located in the lower mold 9, and is configured to press and cover a mobile phone cover plate 11 located in the lower mold 9, so as to ensure that the mobile phone cover plate 11 does not slide in the process of forming the silicone pad, and ensure the integrity of the structure of the silicone pad and the smoothness of the surface. Meanwhile, the lower die insert 10 can cover mobile phone cover plates with different shapes, and the application range is wide.

Specifically, a through groove 12 is formed in the surface of the lower die 9, and the through groove 12 provides a placing space for the silica gel liquid, the mobile phone cover plate and the lower die insert 10. The outer edge of the lower surface of the through groove 12 is provided with a first step 13 for carrying a mobile phone cover plate, the mobile phone cover plate 11 is placed on the first step 13, and a space for forming the surface of the silica gel pad is formed from the inner surface of the through groove 12 to the upper surface of the mobile phone cover plate 11. The silica gel liquid is distributed on the inner surface of the mobile phone cover plate 11, and the surface of the corresponding cured silica gel pad is in accordance with the shape of the inner surface of the mobile phone cover plate 11, that is, the inner surface of the mobile phone cover plate 11 becomes a template for forming the surface of the silica gel pad, and the surface of the corresponding silica gel pad is a curved surface if the inner surface of the mobile phone cover plate 11 is a curved surface. The smoothness of the inner surface of the mobile phone cover plate 11 is high, so that the surface smoothness of the formed silica gel pad is correspondingly high, in the process of attaching the mobile phone cover plate 11 to the viscous film, the viscous film can accurately position the silica gel pad at the correct position, so that the silica gel pad is accurately bonded to the inner surface of the mobile phone cover plate 11, the positioning is accurate, bubbles are not easily generated in the attaching process, and the attaching efficiency is high.

The outer edge of the lower surface of the through groove 12 is further provided with a second step 14 for carrying the lower mold insert 10, and a height difference between the second step 14 and the first step 13 is a height of the mobile phone cover plate 11. The lower die insert 10 is located on the second step 14, and presses and covers the outer surface of the mobile phone cover plate 11, so that the mobile phone cover plate 11 is prevented from shaking, and the stability of the silica gel pad forming is ensured.

In addition, the upper surface of lower mould 9 is seted up with inlet 7 is linked together and is supplied the feed liquor groove 15 that the silica gel liquid got into the die cavity, many feed liquor grooves 15 communicate each other, guarantee the unobstructed of silica gel liquid flow.

To sum up, the silica gel pad forming mold of the utility model utilizes the outer edge of the lower surface of the through groove 12 to be provided with the first step 13 for carrying the mobile phone cover plate 11, so as to ensure that the surface shape of the silica gel pad formed by cooling is consistent with the shape of the mobile phone cover plate 11, improve the smoothness of the surface of the silica gel pad, enhance the adsorbability and air permeability of the silica gel pad, ensure that no bubbles are generated in the process of laminating the viscous film with the mobile phone cover plate 11, ensure accurate positioning and improve the working efficiency; in addition, the outer edge of the lower surface of the through groove 12 is also provided with a second step 14 for carrying the lower mold insert 10, and the lower mold insert 10 is pressed on the mobile phone cover plate 11, so that the stability of the mobile phone cover plate 11 is ensured, and the smoothness of the surface of the formed silica gel pad is further improved.

Claims

1. A silica gel pad forming die comprises an upper die assembly and a lower die assembly, and is characterized in that the upper die assembly comprises an upper die and an upper die insert; the lower die assembly comprises a lower die and a lower die insert, a through groove is formed in the surface of the lower die, a first step for carrying a mobile phone cover plate and a second step for carrying the lower die insert are arranged on the outer edge of the lower surface of the through groove, and the lower die insert is pressed on the mobile phone cover plate; the liquid inlet is formed in the side edge of the lower surface of the upper die, and the liquid inlet groove communicated with the liquid inlet is formed in the upper surface of the lower die.

2. The silicone pad molding die of claim 1, wherein a height difference between the second step and the first step is a height of a mobile phone cover plate.

3. The silica gel pad forming mold according to claim 1, wherein a receiving groove is formed in a surface of the upper mold, and the upper mold insert penetrates into the receiving groove to be integrally combined with the upper mold.

4. The silicone pad molding die of claim 1, wherein the upper die insert and the upper die are of an integral structure.

5. The silica gel pad forming mold according to claim 3 or 4, wherein two strip grooves are symmetrically formed in the side edge of the lower surface of the upper mold insert, and the strip grooves and the lower surface of the upper mold form a cavity for producing support legs of the silica gel pad.

6. The silica gel pad forming mold according to claim 1, wherein a notch is formed in a side surface of the lower surface of the upper mold.